Hepatitis B Virus Screening and Reactivation in a National VA Cohort of Patients with Inflammatory Bowel Disease Treated with Tumor Necrosis Factor Antagonists.

Shah R, Ho EY, Kramer JR, Richardson P, Sansgiry S, El-Serag HB, Hou JK. Hepatitis B Virus Screening and Reactivation in a National VA Cohort of Patients with Inflammatory Bowel Disease Treated with Tumor Necrosis Factor Antagonists. Digestive diseases and sciences. 2018 Jun 1; 63(6):1551-1557.

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Abstract:

BACKGROUND: Practice guidelines recommend screening for hepatitis B virus (HBV) infection prior to initiating treatment of inflammatory bowel disease (IBD) with anti-tumor necrosis factor (anti-TNF) therapy. However, the adherence to these screening guidelines and the clinical outcomes of HBV reactivation following anti-TNF use are not well known. METHODS: This is a retrospective cohort study using the Veterans Health Administration datasets for IBD patients with filled prescriptions for anti-TNFs from 2003 to 2011. Laboratory testing was used to define HBV screening status in the 12 months preceding anti-TNF initiation. Logistic regression models were used to identify predictors of HBV screening. Cases of potential HBV reactivation were identified using ICD-9 codes for HBV infection or acute liver failure or by medications used for HBV infection treatment, and manually reviewed for verification. RESULTS: We identified 3357 IBD patients with filled prescriptions for anti-TNF medications. The HBV testing prior to anti-TNF initiation was 8.1% in 2003 and increased to 43.2% by 2011, with an overall rate of 23.7%. In multivariate analysis, African-American race, facilities with a higher volume of IBD patients, and facilities with an academic affiliation were associated with a higher probability of HBV screening. We did not identify a single case of confirmed clinically relevant HBV reactivation after anti-TNF initiation during 7210 patient-years of medication use. CONCLUSIONS: HBV screening rates prior to anti-TNF initiation are low among IBD patients, but have increased over time. Despite low rates of screening, clinically significant HBV reactivation after anti-TNF initiation in this US cohort was nonexistent.